DE2449407A1 - Sheet metal corrosion protective cladding - has anchorage of range of rubber or plastic layers assisted by adhesive,chemicals, and mechanical deforming - Google Patents

Abstract

A metal sheet or strip is protected from corrosion by mechanically deforming its surface and by applying a layer or layers of rubber or plastics material to one or both sides, with or without the application of a bonding medium or chemical or adhesive. This protective coating system may be a multi stage process when successive layers of chemical and/or coating material are applied, and all or part of the surface may be treated in different portions in different stages, and the properties of the materials may be varied by the method of application, e.g. loading or stretching may be applied. Threads or fibrous coatings may be included. The methods of deforming the metal sheet include forming raised strips, punching, perforating, slitting, corrugating, forming raised tongues of barbs.

Description

Band with breakthroughs, fillings and coatings The present The invention has set itself the task of eliminating the disadvantages of known substances (e.g. Metals and their susceptibility to corrosion and aggression) by balancing out, that one corrosion-resistant and / or aggressive substances, such as. B. rubber and / or brings plastics into contact with the metals mentioned as examples, that between the two substances there is first and foremost an intimate connection and above In addition, thanks to the agressive and corrosion-resistant materials, a complete Wrapping of all surfaces of the base material, a filling of any existing ones Breakthroughs and an optional single or multilayer attachment of uninterrupted Surfaces made of the corrosion and aggression-resistant materials are created.

Materials that are susceptible to corrosion and aggression include all metallic materials, excluding the known targeted alloys.

To the corrosion-resistant and aggression-resistant materials almost all rubber grades and almost all plastic formulations belong to.

So it made sense to use existing plastics or rubber qualities to reinforce such materials. After the most careful investigation, however, this one Thoughts from the area of possible inventions eliminated.

The inventive task is: Existing preferably metallic materials whose technical properties are well known and proven which, however, show certain weaknesses in further processing, due to the composite Secure with chemical works ovens so that in future corrosion and aggression on z. B. metallic material remains excluded.

The idea of the invention should be based on one of an extraordinarily large number of possible examples are shown, namely on the water installation pipe (longitudinally welded pipe middle row, black or galvanized).

The main problem with such pipes is the tight weld of the tape. Because there are considerable sources of error here, the was relatively large Wall thickness selected. That this wall thickness is actually not necessary proves the execution of the thin-walled copper pipes that were also laid in the houses can also withstand the usual pressures there without further ado.

A tube designed according to the invention for the same purpose would can be produced in much smaller wall thicknesses because of the mandatory requirement for tightness in the application case according to the invention no longer depends on the metallic Tubular body, but reliably taken over and released from the enveloping plastic will.

The physical and mechanical problems have been controlled by the present invention brought and have become problem-free.

The present invention covers all areas of need in which high mechanical strength while maintaining low wall thicknesses, at simultaneous production of complicated contours, with simultaneous corrosion resistance and with simultaneous resistance to aggression of any kind.

The present invention allows the manufacture of large area Elements, e.g. B. as the outer cladding of buildings of any kind, for the production of Pipes with high mechanical strength and almost absolute resistance to corrosion and aggression in all known dimensions (large plastic pipes with wall thicknesses until to 60 mm z. B. brought according to the invention in the future in areas in which there was previously no possible application, with wall thicknesses of approx. 12 mm).

The tape of the invention can be used as a reinforcement and at the same time Expansion brake in plastic profiles of all types (e.g. window profiles, technical Pipe profiles, container constructions).

The wrapping of the band surfaces, the filling of existing breakthroughs, and the optional coating can be manufactured by any of the known techniques and processing of rubber and plastics of all kinds.

State of the art: Many attempts have been made to use carrier materials, which are naturally susceptible to corrosion and / or aggression to protect These efforts are particularly evident in the manufacture of installation pipes, which are welded. To coat pipes on their outer surface (e.g. by sintering or by extrusion) are well known.

Extensive attempts have been made to find coatings of the same Bringing kind and equal quality into the interior of pipes.

Two major problems could not be solved: 1. That Problem of the permanent connection of an introduced layer in the interior of a Pipe and 2. the connection of pipe ends with one another.

Experiments in this regard have been terminated with the result that in hot Cold water exposure at the end of a pipe originated in the metal pipe and that the joints continue to be exposed to corrosion and aggression stayed.

Attempts to pipe inner surfaces and the inner surfaces of pipe connectors Protecting them by sintering, too, turned out to be positive, but they do no industrial production facilities.

What has been said about the state of the art up to now also applies Dimensions for all other conceivable areas of application, for example in the introductory Part of this description of the invention have been made.

In making this invention, the following document material became available taken into account: universal pipe file. P 2418 797.1 5 G 7413 536.7 tape with openings "P 2438 595.3 G not yet known tape with breakthroughs, wrappings, P 2449 407.3 Coatings G not yet known also publications: DT-OS 20 42 720 DT-OS 21 o5 120 DT-OS 23 52 o86 DT-GM 18 34 823 DT-GM 18 80 176 DT-GM 18 95 914 DT-GM 19 ol 914 DT-GM 73 39 165 according to the letter from the German Patent Office dated August 21, 1974 About that In addition, it was considered: Everything present technical and scientific Written, as far as possible.

According to the invention, it is assumed that the production is lossless made of carrier tape - preferably made of metallic materials - so economically it can be that already here very considerable cost savings are possible.

The cost savings are possible according to the invention in that, for. B. a complete system for the production of welded pipes depending on the equipment It would cost about 50 to 70 million DM to produce a device according to the invention Plant for rolling the strip according to the invention and for subsequent finishing same, costs of max.

Caused 25 to 30 million DM.

In this comparison are the costs for a galvanizing line not yet fully absorbed. The tape itself, which is used as "pre-material" for Production of the tape with breakthroughs is used, does not require any further Explanation, as it is completely familiar to the person skilled in the art. It can be used both in the warm and in the in the cold state - used to produce tape with lossless breakthroughs will.

Such a band is, when it has reached its nominal strength, single or more chisel rollers fed. Depending on the task, (e.g. with profile formation in the belt itself) up to an infinite number of chisel rollers arranged be.

The chisel rollers, which can mesh with each other like gears, but also, depending on the type of breakthroughs to be made, run on one another must (such as

a punch in a die) are usually made from suitable Embossing and cutting steels produced.

Both massive blocks and rows of panels can be used Find use. Such a decision is made when to the thought Purpose of the most economical breakthrough or the most economical deformation of the Surface has been determined.

Subsequent smoothing or defining rollers bring the now raw material Band with lossless breakthroughs in the final and prescribed form.

The final and prescribed shape for a flat belt, for example without any contour is achieved when, after making the loss-free breakthroughs z. B. by trailing riveting rollers, the resulting perforated wreaths by bordering (similar to a hollow rivet) have been provided with undercuts, at the same time the tape was brought to a target thickness.

Thus the variety of possible uses of the manufactured according to the invention Product not confused, should for the sake of simplicity (as already described in the descriptive Part done beforehand) the production of a pipe according to the invention is detailed will. It should be expressly noted here that the scope of the tape with breakthroughs, fillings and coating not limited to pipes.

The dimensions for making a tape that will later become a Pipe is to be welded is known and does not need to be explained here. Before If this band is fed to the welding process, those already described occur Chisel rollers in function and bring both size and arrangement precisely defined lossless breakthroughs.

These breakthroughs can also get undercuts. (Details can be found in the attached drawings.

After the tape is now broken according to the invention, can Cleaning processes and / or pre-impregnations are interposed. In connection on this, the lossless openwork strip is fed to a normal pipe bending machine and welded butted or overlapped.

It is important here that the welding that has now been carried out does not have any Tasks with regard to the tightness of the pipe has more. Band material to be displaced evades into the breakthroughs.

The tube that has now been created with openings can now, for example be fed to an extruder with a cross-head. The design of the cross-head is known to the person skilled in the art. Feeding the enveloping and filling and coated Material above or through a flying core is also widely known and does not require any further explanation.

The taper of the flying core at its end determines the thickness the inner layer. In order to avoid that the band bent to the pipe through the strong Pressure of the melt is deformed, there are in the form of ring gates and others practical solutions sufficient possibilities, which are also known.

The chisel rollers described above do not always have and exclusively the function of "chiseling". Depending on the task, such Chisel rolling also only has the function of deforming and subsequent Production of flint cuts without creating cross-sectional breakthroughs are. It should be expressly noted that this type of surface processing is also used for Volume of the inventive idea belong.

Tapes pretreated in this way without exact openings, but with deformations, which are designed so that usable fillings and / or coatings with for the intended purpose of creating a sufficient adhesive base are for mechanical highly stressed workpieces (e.g. compressive stress).

An already mentioned application example of the inventive concept, namely the production of longitudinally welded pipes - requires an explanatory supplement. The main advantages in the manufacture of such a base pipe, preferably made of metal, consist in the fact that much thinner material qualities at significantly higher processing and processing speeds, the subsequent filling and / or coating can be supplied.

A subsequent, imperative with the current production technology Deburring of the welded connection of the pipe seam can be done in the application according to the invention omitted.

It goes without saying that it is also within the scope of the inventive concept contain that treating the tape with chisels and / or deformations too Undercuts can be combined with each other. The decision about this which individual technology or which technology combinations will ultimately be used, According to the experience available, it should be used when it is clear which procedure to be applied to the fillings and / or wrappings and / or coatings to attach.

Post-treatment of the finished strip, panels or intermediate products9 such as B. pipes, 0 B. by blasting, roughening, bonding, impregnating9 or precoating, must also only be planned9 when it is clear which one Wrapping or filling or coating process is finally applied.

It must be emphasized again and again that the idea of invention is not in it consists of reinforcing plastic pipe, but solely assumes that proven existing materials (preferably metal and metallic alloys) to protect against corrosion and aggression also against erosion.

Of course it is possible with the help of suitable large systems - e.g. B. in the manufacture of transmission lines - the production facility of the belt and the filling, wrapping and / or coating plant with existing ones and t) ekillmben conveyor systems to combine that such a facility carries out the necessary earthworks on one side of its direction of movement and on the other side of the plant an endless tube, or something else, in the created one Laying channel is produced and the laying channel is closed again at the end can definitely be part of the inventive area.

The connection of pipe sections or the assembly of fittings, e.g. B. in the installation of local networks and in the installation of in-house networks is not the subject of this patent application, but is intended to provide a better overview should be mentioned briefly. Connections of this kind protect the carrier material at the interfaces before any corrosion and before any aggression and withstand pressure loads up to 9o atmospheres has been proven.

Fittings and connecting elements of this type have already been separated registered for protection.

Description of the attached drawings: Fig. 1) shows a so-called Bridge deformation.

It is a spatial deformation of the base material, whereby Slits arise on two sides, which in the case of a wrapping or filling or a coating, the passage of a temporarily plastic material allow.

In the case of mechanical loads, the flow of force lines is deflected instead of.

Fig. 2) shows a odor with a crater-shaped torn open Hand in the upper area (depending on the chisel design) already during manufacture Undercuts or through its crack-shaped edge design get the anchoring extremely favored by casings and coatings.

Fig. 3 shows a band deformation without a breakthrough, but with undercuts. When producing such deformations with undercuts without breakthroughs, different wall thicknesses arise, which (if necessary, also when using of heat) in subsequent work steps to form undercuts to lead.

Fig. 4. Here, too, is a band deformation without breakthroughs shown. With this other embodiment of surface deformations is intended only show that it is technically possible to produce deformations, which can have any technically possible design.

Fig. 5. An embodiment of a tongue chiselling is shown here. It was important to emphasize that the releasing of the tongues (that is also lossless possible) can be carried out in several spatial levels. This too example stands for the many other shape possibilities for the production of lossless Breakthroughs.

Fig. 6. Here 'a flat band is shown, whose Breakthrough lies in the band level. This band is enveloped and filled on both sides and coated. It is within the scope of the inventive concept that the envelope and / or the filling and / or the coating of the same and / or unequal Materials. In addition to the carrier materials, which are usually preferred consist of metal and / or metal alloys, both natural substances, such as z. B. rubber, as well as chemical materials such. B. all plastic qualities and Find synthetic rubber types application.

Fig; ' 7, Here again is a flat strip or sheet metal or plate. The loss-free breakthrough is designed to be conical. In practice, this means that the enveloping or

filling or coating substance is favorably influenced.

Fig. 8. # Again is a flat sheet metal or band or Plate shown in which the edges of the loss-free breakthrough are rounded.

Fig. 9. Here is a particularly advantageous form of manufacture represented by bands with breakthroughs in a spatial design. This Embodiment is particularly suitable for one and / or two-sided wrapping, Filling, coating of the carrier material. The coating so trained Tapes or plates or sheets is particularly economical in the event that only one side of the carrier material is protected from aggression and corrosion will got to. In such a case, the other side of the carrier material shows only partial Fills, but otherwise the carrier material is visible. Such forms of design are also recommended for the interchangeable attachment of appropriately shaped Coating pieces, e.g. B. with baffle plates.

Fig. 10. Here is a band or sheet metal deformed in two planes shown without openings. Taking advantage of the different wall thicknesses and with partial application of pressure and heat, effective undercuts can be created created for anchoring the filling or the envelope or the coating will. In addition to use in high pressure or high stress areas Chemical materials in the form of foam bodies excellently with the carrier material associate.

Fig. 11. Here again is a band with a flat, loss-free breakthrough design shown. As a special note it should be mentioned that with different layer thicknesses the shrinkage behavior of the smaller layer can be influenced and on the other hand by complying with the technical manufacturing data when wrapping and / or Filling in and / or coating the formation of so-called sink marks in a targeted manner can be influenced. Surface changes of this kind can occur in the field of pipe technology lead to the extremely advantageous formation of interfacial eddies, which in turn allow special technical effects.

Fig. 12 .: A multi-layer system is shown here.

In the example case, there are two bands with two-dimensional design Breakthroughs of different edge design, which are arranged so that the breakthroughs against each other are offset. Above a breakthrough lies Opposite this is a web of the tape layer. It remains the technical requirements reserved whether a coating is applied between the two carrier materials will.

In the example, a layer is shown. It goes without saying possible, several layers or layers of the carrier material with several layers to wrap or fill in and / or coat suitable materials. Sense of everyone It can only be representations to suggestively explain the idea of the invention.

Fig. 13. Here a carrier tape is shown with flat conical formed loss-free breakthroughs, which is filled and enveloped on one side and is equipped on the other side with a porous layer. It stays that way The purpose of the application is left to the discretion of the porous layer with the one to be protected Carrier material is connected.

Fig. 14 shows a tape or plate made according to the invention, or sheet metal. The essence of it can be seen in the different cross-sections. Such different cross-sections can according to the invention by rolling and / or by chiseling with blunt chisel tools. Originally, at Markings made by chiseling can then be rolled into the appropriate Direction to be expanded to openings and breakthroughs.

Fig. 15. A strip or sheet or plate is shown here with loss-free breakthroughs in every technical form. The ones marked with c Fields can have the same or different cross-sections than those in the example illustrated slot parts. By simultaneous or subsequent embossing processes the chisel markings can be expanded to form openings. Combinations of Slitting and embossing processes give the carrier material special good technical properties.

Fig. 16. Here are possibilities as an example of the inventive idea the different cross-sectional design shown. All representations have flat character.

Fig. 17. Here, in one case, a flat band production is shown, whereby special emphasis is placed on the considerable possibilities in designing lossless Breakthroughs was made. The other two representations show that surface deformations are produced by embossing or by blunt chiselling, those to be enveloped or filled or coated afterwards Give carrier material high mechanical strength.

Fig. 18. In this example, the tape is finished off by sphrägar Sharp chisels in its surfaces prepared on one or both sides so that they are flaky Undercuts arise.

Fig. 19. In this inventive solution, one is again in the shape of a scale Failing angled chiselling provided, but this time the formation of scales occurs in that previously the tape was pressed at certain points and then chiseled at an angle became. Such surface treatments are of course one-sided and also two-sided possible.

Fig. 20. This embodiment is again demonstrated by a band, that by punctual embossing processes on one side hemispherical depressions and on the other hand has received corresponding increases. About these wells and over the bumps can be made by known welding techniques, e.g. B. Devices anchored will.

Constructions of this type allow the production of two-sided coated panels without the need for breakthroughs. Plates of this kind can be deformed before and after coating.

Fig. 21. A wavy band is shown here. In the valleys of this band, wires or profiles can be inserted, which after previous connection z. B. by welding, with the tape in turn the required Produce undercuts for effective punctiform or flat coatings to attach.

Fig. 22. This figure represents the scheme of one possible solution - namely the pipe - for a better understanding. 1) is the incoming belt, which of chisel resp.

embossing rollers (in the example a bridge embossing is shown) marked will. From there, the tape arrives (intermediate heat stages can be switched on) between stretching and / or pressure rollers (2), 3) which, depending on the task at hand, the material parts between the marks on changed thick rollers, thereby making the breakthroughs arise or spatial deformations of the material webs in positive or negative make spatial direction. The band, represented by a drawn center line, then runs, depending on the task, through smoothing rollers, which make the spatial changes Push the tape back to the prescribed dimension. A welding ramp 5) (in An example is an oxy-fuel welding ramp) that heats the strip that has been rolled up in the meantime so that the ends to be connected and also the tape itself are free of tension.

The strip that has been pre-rolled to form the welded joint then runs through Weld joint rolls (7) and then through calibration rolls (8). That now from the starting material tape with loss-free breakthroughs to the raw body tube (9) The starting material that has become passes through a rotating saw (1o), which does the prescribed Manufactures lengths. These fall automatically into a magazine (11). These magazines are brought in front of the respective dimension extruder and there accordingly according to the filling and / or wrapping and / or coating speed, passed through the machine, which they pipe as a finished product inside and / or outside coated, leave. It is important to note that the Establishment is an example of many possibilities.

Products of any type and shape can be manufactured according to similar principles will.

In the middle area of the drawing sheet is the one provided in the example Ribbon drawn out somewhat enlarged.

Here you can see the tape pre-rolled as a tube for welding (9) with openings of various shapes and designs (12). In the inventive It does not matter whether the ends of the tape are butted or overlapped are connected to each other because of the excess amount of material that occurs can move into the existing recesses at any time.

Since there are no sealing problems during welding in the pipe designed according to the invention the production speed can be increased considerably.

About production bottlenecks due to the different working speeds between the pipe bending machine and the coating device is recommended it is, depending on the coating technology, e.g. B. sintering or extruding wines accordingly to provide a large number of filling, wrapping or coating systems.

General: All drawings were done by laypeople. They make no claim to exact compliance with the regulations of the technical Drawing.

The idea of invention is always essential and binding, the culminates in the fact that mechanically excellent carrier materials are produced in this way and be designed that with the help of fillings or wrappings or coatings this carrier material is protected against corrosion and aggression.

All representations both drawn and written contain only individual examples. In no case do they exhaust the application possibilities and scope of application of the idea of the invention.

At this point it should also be mentioned that the tape has openings The technology is excellently suited to its diverse range of uses of construction (concreting) to replace significantly. In plant engineering, in general mechanical engineering, in fixture and device construction, considerable application possibilities seen.

Claims (22)

Tape with breakthroughs, fillings and coatings Protection claims: 1st tape with breakthroughs - fillings - coatings, characterized in that the flat and / or three-dimensional Breakthroughs and the remaining band areas filled in at the same time or one after the other and / or enveloped and / or coated. 2. According to claim 1) characterized in that the filling and / or Wrapping and / or coating the tape completely or partially from corrosion and / or Protect aggression. 3. According to claims 1 and 2) characterized in that the fillings and / or sheathing and / or coating made of the same or different chemical materials are made in one and / or multiple layers. 4. According to claims 1 to 3) characterized in that the, in the same or different in their physical, chemical and mechanical values Chemical materials with each other and / or with the band surfaces as far as possible enter into a permanent connection. 5. According to claim 4) characterized in that the band surfaces to Creation of a technically good connection with the chemical material or materials be pretreated. 6. According to claims 1 to 5), characterized in that the filling and / or wrapping and / or coating perform additional technical functions. 7. According to claim 6) characterized in that the normal physical Behavior of the chemical materials due to the anchoring on the belt surfaces on the one hand and the dimensioning and connection of the chemical materials among themselves on the other hand, which is fully or partially changeable '. 8. According to claim 7) characterized in that the chemical materials can be changed in their technical values through additions. 9. According to claims 1 to 8) characterized in that by Corresponding sequencing of production processes several layers of tape - chemical material - tape - chemical material - chemical material can be arranged with the bands with their breakthroughs can also be offset from one another. 10. According to claims 9) characterized in that instead of several Band arrangements and combinations of band - thread - fabric in the form of a tube or band or are provided as a location. 11. According to claims 1 to 10) characterized in that at uneven loading of the chemical materials in the area of the breakthroughs the same be compressed and / or reinforced. 12. According to claim 11) characterized in that when loaded the Chemical materials the line of force flow is changed. 13. According to claims 1 to 12), characterized in that the Tape has any technically possible length and / or width and / or thickness. 14. According to claims 1 to 13), characterized in that the Breakthroughs in terms of their cross-section, their Shape, theirs flat and / or spatial arrangement and distribution, their frequency, their Edge design, correspond to the current technical possibilities. 15. According to claims 1 to 14), characterized in that the remaining band surfaces can be roughened to a greater or lesser extent as required. 16. According to claims 1 to 15) characterized in that the Breakthroughs in the band are made by chisel rolling. 17. According to claims 1 to 16), characterized in that the Belt and / or the openings through downstream rollers and / or chisel rollers, is deliberately deformed. 18. According to claims 1 to 17) characterized in that the Deformation of the tape and / or breakthroughs as well as before and after filling or takes place after coating. 19. According to claims 1 to 18) characterized in that at the production of the tape and / or the filling and / or the coating pressure and / or heat and / or movement are applied. 20. According to claims 1 to 19) characterized in that as The starting material for the strip is any suitable metallic and / or non-metallic material Materials and material combinations are used. 21. According to claims 1 to 20) characterized in that for the production of the envelope, the band surfaces and / or the filling of the openings and / or the production of coatings all suitable chemical materials or Chemical material combinations can be used in all possible forms. 22. According to claims 1 to 21) characterized in that for the production of the tape all known manufacturing techniques of metal processing and all known for the production of wrapping, filling and coating Rubber and / or plastics processing techniques are used.